comopedir-web/gatsby-node.js at master · comopedir/comopedir-web · GitHub

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const path = require("path")
const { pageNameByLocation } = require("./node-src/helpers")
const {
  homeQueryFields,
  businessesQuery,
  categoryQuery,
} = require("./node-src/queries")

exports.createPages = async ({ graphql, actions }) => {
  const { createPage } = actions

  // Get all businesses
  const businessesPromise = graphql(businessesQuery).then(result => {
    const businesses = result.data.comopedir.businesses.edges || []
    // Create pages for each business
    businesses.forEach(({ node = {} }) => {
      if (node.slug) {
        createPage({
          path: node.slug,
          component: path.resolve("./src/templates/Restaurant/index.js"),
          context: {
            data: node,
          },
        })
      }
    })
    return businesses
  })

  // Get all categories
  const categoriesPromise = graphql(categoryQuery).then(result =>
    (result.data.comopedir.categories.edges || []).map(({ node }) => node)
  )

  const [businesses, categories] = await Promise.all([
    businessesPromise,
    categoriesPromise,
  ])

  // Get all locations from the businesses
  const locations = businesses.reduce((accum, { node = {} }) => {
    const { addresses } = node
    addresses.forEach((address = {}) => {
      const { city, state } = address
      if (!accum[state]) {
        accum[state] = [city]
      } else if (!accum[state].includes(city)) {
        accum[state].push(city)
      }
    })
    return accum
  }, {})

  // Get businesses for every category in every city in every state.
  const businessFilteredPromise = Promise.all(
    Object.keys(locations).map(state =>
      Promise.all(
        locations[state].map(city =>
          Promise.all([
            // Create root page for each city and state with all categories.
            graphql(`
            query {
              comopedir {
                businesses(city: "${city}", state: "${state}") {
                  ${homeQueryFields}
                }
              }
            }
            `).then(result => {
              const businessesFiltered =
                (result.data.comopedir.businesses &&
                  result.data.comopedir.businesses.edges) ||
                []
              return createPage(
                getListingPageParams({
                  state,
                  city,
                  businesses: businessesFiltered,
                  locations,
                  categories,
                })
              )
            }),
            Promise.all(
              categories.map(category =>
                graphql(`
        query {
          comopedir {
            businesses(city: "${city}", state: "${state}", category: "${category.id}") {
              ${homeQueryFields}
            }
          }
        }
      `).then(result => {
                  const businessesFiltered =
                    (result.data.comopedir.businesses &&
                      result.data.comopedir.businesses.edges) ||
                    []
                  return createPage(
                    getListingPageParams({
                      state,
                      city,
                      category: category.slug,
                      businesses: businessesFiltered,
                      locations,
                      categories,
                    })
                  )
                })
              )
            ),
          ])
        )
      )
    )
  )

  return Promise.all([
    businessFilteredPromise,
    createPage({
      path: "/",
      component: path.resolve("./src/templates/Listing/index.js"),
      context: {
        businesses: businesses.map(i => i.node),
        locations,
        categories: categories.map(i => i.slug),
      },
    }),
  ])
}

// Generate page params for createPage for HomePage
const getListingPageParams = ({
  state,
  city,
  category = "",
  businesses,
  locations,
  categories,
}) => ({
  path: `${pageNameByLocation(state, city)}/${category}`,
  component: path.resolve("./src/templates/Listing/index.js"),
  context: {
    businesses: businesses.map(i => i.node),
    locations,
    categories: categories.map(i => i.slug),
    selectedCity: city,
    selectedState: state,
    selectedCategory: category,
  },
})